Hans rathsbukg



Reiasued Dec. 31,1929

UNITED STATES PATENT OFFICE rums aa'rnsBUno, or Fun'rn, GERMANY, ASSIGNOR TO 'BnEINIson-wEsTramscnI-i srmosron-ax'rmnonsmsemr, or COLOGNE, GERMANY PRIMER COMPOSITION Io Drawing. Original application filed December 20, 1923, Serial No. 681,876. Divided and this application filed Iareh 18, 1985, Serial No. 16,562, and in Belgium October 28, 1923.- Original No. 1,583,380, dated Kay 25, 1986. Application for reissue filed October 18, 1929. Serial No. 400,728,

The present application is in part a connylnitrosaminoguanyltetracene admixedwith tinuation of application Serial No. 681,876, a salt of an organic nitro-compound. filed December 20, 1923. 2. A primer composition comprising gua- According .to German Patent Nr. 362433 nylnitrosaminoguanyltetracene admixedwith (see British Patent N r. 201009), tetracenes trinitroresorcinate of lead. 50 are used for the preparation of primer com- In testimony .whereof. I have signedmy positions for percussion caps, Flobcrt rifle name to this specification. caps, and simllar ammunition. i HANS RATHSBURG.

Tetracenes are completely or partly substituted combinations with an open chain of 4 atoms of nitrogen, having the general for- The object of the present invention is to improve upon prior compositions of the above-described character- To this end,

' guanylnitrosaminoguanyltetracene (like ise called guanyldiazoguanyltetracene) is us d in mixture with salts of nitro-compounds. (such, for instance, as the trinitroresorcinate of lead) or with well-known oxygen-containing substances, such as chlorates, nitrates and peroxides, together with friction means.

The. above mentionedtetracene is the product of reaction of aminoguanidine nitrate with sodium nitrite, having the empirical formula C H ONm; its constitution can be illustrated by the following formula:

This tetracene is more insensitive to shock than any other, having more or less'the sensibility offulminate of mercury against shock and friction, and on the other hand, it is very stable in storage.

40 The advantages of this improvement over prior-art primer compositions, which contain solely fulminate of mercury for means of ignition, will be obvious.

I claim: a

1. A primer composition comprising gua- 

